短語(yǔ)詞組短語(yǔ)age -class structure 年齡結(jié)構(gòu)Dynamic of age -class structure 齡級(jí)結(jié)構(gòu)動(dòng)態(tài)age and size class structure 光子class age -structure 類年齡結(jié)構(gòu) 返回 age class structure